目的　通过电刺激兔颈脊神经节，检测颈交感神经节内的神经肽Y （neuropeptide Y，NPY）含量，研究颈交感神经节与颈脊神经节间的通路联系，探讨颈性眩晕发病机制中的神经解剖学基础。  方法　96只新西兰兔随机分为C2、C3、C4、C5、C6、C7组及相应对照组（每组8只），麻醉后显露相应的脊神经节，给予波宽0.5 ms、频率30 Hz、5 V电刺激，5秒/次，每1 min重复1次，共5次，30 min后，灌注固定，切取双侧颈上、下交感神经节，切片，免疫反应，染色，观察。  结果　电刺激C2、C3脊神经节后，同侧颈上交感神经节内NPY含量升高（P<0.05）；电刺激C4、C5脊神经节后，同侧颈上交感神经节和颈下交感神经节内NPY含量均有明显变化（P<0.05）；电刺激C6、C7脊神经节后，同侧颈下交感神经节内NPY含量升高（P<0.05）。  结论　颈脊神经节和颈交感神经节间存在神经电生理上的通路联系，且具有节段性、同侧性特点，为颈性眩晕的发病机制及临床分型提供了实验依据和理论基础。

Objective　To study the neural pathway between cervical spinal ganglia and cervical sympathetic ganglia, and to explore the neural factors in the pathogenesis of cervical vertigo by detecting the neuropeptide Y (NPY) in cervical sympathetic ganglia after the cervical spinal ganglia electro-stimulated.   Methods　96 New Zealand rabbits were divided into C2, C3, C4, C5, C6, C7 and control groups randomly (n=8 in each group ). The electro-stimulations (width=0.5 ms, 30 Hz, 5 V, time=5 s, 1 time/1 min, and 5 times total) were given to specific spinal ganglia which were revealed. After 30 min, the rabbits were killed through perfusion and the superior cervical sympathetic ganglia (SCG) and inferior cervical sympathetic ganglia (ICG) of both sides were cut. Then the section were made after immunologic reaction and observed under the microscope.　Results　The content of NPY in the same side sympathetic ganglia was higher than the other side sympathetic ganglia and the control group sympathetic ganglia after the electro-stimulation was given to the cervical spinal ganglia, and the difference was statistic significance (P<0.05). When the electro-stimulation was given to the C2, C3 spinal ganglia, the change of the NPY content of sympathetic ganglia were found in SCG mainly; when the electro-stimulation were given to the C4, C5 spinal ganglia, the change of the NPY content of sympathetic ganglia were found in SCG and ICG; when the electro-stimulation were given to the C6, C7 spinal ganglia, the change of the NPY content of sympathetic ganglia were found in ICG mainly.   Conclusion　There is some kind of neural pathway between the cervical spinal ganglia and cervical sympathetic ganglia, and the characteristic of segment and homonymy in this kind of connection is also found, which provides a neuroanatomical basis for the hypothesis of reflex arc in cervical vertigo.